Eyeglasses.



210.740,624. EATENTED 00T. e, 1903.

. H. BRINKHAUS.

EYEGLA$SES. APPLIGATHJN FILED JAN. s1, 190s.

No mmm.'

n I i Patented October 6, 19031 PATENT; OFFICE.

HUGO'ERINKHAS, or nniieuae, eEEMAnr.

lsvlaelniisslas.

SPECIFICATION forming part of Letters Patent No. 749,624, dated October6, 19GB. Application mea January 31, 1903.l serial No. 141,374.;A (unman.)

To al?, whom t may concern:

Beit known that LHUGo BRINKHAUS, doctor of medicine, a citizen of theUnited States, residing at Hamburg, Germany, have invented certain newand useful improvements in the construction of what are commonly knownas Pince-Nez Eyeglasses-1; and I do hereby declare the following to be afull, clear, and eX- act description of the invention, snchas willenable others skilled in the art to which it appertains to make and usethe same, reference being had to the drawings and the letters thereon.

Figure l represents a front view of a pair of eyeglasses mounted inaccordance'with my invention; Fig. 2, a plan view of eyeglasses at anangle; Figs. 3 and 4, the improved spring, their ends differentlyshaped, showing how the spring may be connected with different forms ofeyeglasses in the market.

This improvement has for its object to permit the glasses to be placedin position on the nose without causing them to make a partial rotarymovement around their optical axes, as is the case with the usual kindof eyeglasses. In stretching the spring while placing the eyeglasses inposition on the nose the glasses will make a movement in the planeperpendicular to the plane of the glasses, either forwarder sidewise orboth ways, but will not make a rotary movement around theiry opticalcenters. This is of importance where cylinders or prismatic glasses areused in combination or not with spherical glasses. In-

stead of the usual band -spring a helical spring has sometimes been usedin combinag tion with and dependent upon a guiding-bar in order toconnect the two glasses and enable them to be placed upon the nosewithout making a rotary movement toward one another. The glasses in thiscase approach one another in a straight line and remain alw. ys in oneplane.

According to my invention I employ a spring `the form and mode ofapplication of which insure the same results in a simpler manner withadditional advantages. In the accompanying drawings the spring bpossesses elasticity only in a plane perpendicular, or nearly so, tothat of the glasses. This ela-sticity is obtained by the hoop or bowshape of parallel position of the flat surface of a band spring to thesurface of the glasses a. The result is that the glasses can only bemoved in a plane more or less perpendicular to them- "selves, but cannotmake a rotary movement'4 and in using cylindrical glasses or thelike'the direction of their axes will remain in the same positionnotwithstanding the displacement of the glasses out of their positionrelatively to `the horizontal and 'vertical medium lines of the'eyes.Anotheradvantage of this construction is that the spring may be fastenedto the sides of the eyeglass or its frame instead of upon theirperiphery.

Having thus fully described my invention,

'l claim the following features as my inven- 2. The combination witheyeglasses of aspring horizontally disposed and located as high as theline connecting the upper border of the glasses in the rear of that'plane of the glasses which is nearest to the eyes, as shown anddescribed.

3. The combination with eyeglasses of a spring horizontally disposed andlocated as high as the line connecting the upper border of the glasses,with loops at its ends which projectbeyond that plane of the glasseswhich is nearest to the eyes, as shown and described.

4.-. The combination with eyeglasses of a spring horizontally disposedand located as high as the line connecting the upper border of theglasses, projecting beyond that plane of the glasses which is nearest tothe eyes and being fastened on the rear side of the glasses, as shownand described.

V5. The combination with eyeglasses of a v the spring in the describedplane or by the A spring horizontally disposed and located as naine tothis specification in the presence of high as the upper border of theglasses with two subscribing Witnesses. loops at its ends projectingbeyond that plane of the glasses which is nearest to the eyes HUGOBRINKHAUb' and being fastened on the rear side of the Witnesses: glassesas shown and described. E. H. L. MUMMENHOFF,

In testimony whereof I have signedmy OTTO W. HELLMRIOH.

